The 10 Easiest Ways to Keep Ubuntu System Clean

Uses sudo for something that should absolutely not require it.

Mostly advocates removing packages and clearing caches, but doesn't provide necessary guidance on judging when that's desirable.

Overall: not a useful article.

This reminds me of the old Digg articles where everything was a numbered list. "Top 5 life hacks everyone should know", etc

This kind of submission is just spam, in my opinion.